Table 3.
Frequency of sensitization with significant difference in relation to two studies in the literature in Brazil (Brazilian Group of Contact Dermatitis4 and at Santa Casa of São Paulo during 2006–201112).
| Substance significant difference | ILSL study % |
GBDC 2000 % |
Santa Casa % |
Chi-square p < 0.05 GBDC × ILSL |
Chi-square p < 0.05 SC × ILSL |
|---|---|---|---|---|---|
| Nickel sulphate | 56.25 | 25.1 | 28.16 | 73.4839 (p < 0.00001) | 50.9494 (p < 0.00001) |
| Cobalt chloride | 23.43 | 11.0 | 10.52 | 21.8247 (p < 0.000003) | 20.8348 (p < 0.000005) |
| Neomycin | 18.22 | 4.3 | 7.28 | 49.8009 (p < 0.00001) | 19.7243 (p < 0.000009) |
| Potassium dichromate | 17.7 | 8.1 | 11.7 | 17.0606 (p < 0.000004) | 5.6508 (p < 0.017) |
| Kathon CG | 15.1 | 2.2 | 2.43 | 64.9045 (p < 0.00001) | 45.8274 (p < 0.00001) |
| Formaldehyde | 13.02 | 3.8 | 3.24 | 26.747 (p < 0.00001) | 26.7292 (p < 0.00001) |
| Colophony | 5.72 | 2.6 | 2.75 | 5.2608 (p < 0.02) | 3.8937 (p < 0.04) |
| Irgasan | 4.21 | 0.7 | 0.81 | 14.8632 (p < 0.00012) | 10.4576 (p < 0.001) |
| Total patients with positive tests | 192 | 967 | 618 |
ILSL, Instituto Lauro de Souza Lima.